What’s Vulnerable › Vulnerabilities

CVE-2018-9194

• Severity: medium (CVSS 5.9 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-09-05 · updated 2026-06-17
• Weakness: CWE-203

Description

A plaintext recovery of encrypted messages or a Man-in-the-middle (MiTM) attack on RSA PKCS #1 v1.5 encryption may be possible without knowledge of the server's private key. Fortinet FortiOS 5.4.6 to 5.4.9, 6.0.0 and 6.0.1 are vulnerable by such attack under VIP SSL feature when CPx being used.

Affected products

• Fortinet FortiOS (FortiGate): from 5.4.6 through 5.4.9; 6.0.0, 6.0.1

References

• https://fortiguard.com/advisory/FG-IR-17-302
• https://robotattack.org/
• https://www.kb.cert.org/vuls/id/144389
• https://fortiguard.com/advisory/FG-IR-17-302
• https://robotattack.org/
• https://www.kb.cert.org/vuls/id/144389

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